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Finding the Fourth Proportional to 53,426.80, 80,255.40 and 51,468.40

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Solution

The fourth proportional to 53,426.80, 80,255.40 and 51,468.40 is: 77,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,426.80 : 80,255.40 = 51,468.40 : x
  2. Step 2: Convert to fraction form
    53,426.80/80,255.40 = 51,468.40/x
  3. Step 3: Cross multiply
    53,426.80x = 80,255.40 × 51,468.40
  4. Step 4: Simplify right side
    53,426.80x = 4,130,617,029.36
  5. Step 5: Solve for x
    x = 4,130,617,029.36/53,426.80
  6. Step 6: Final answer
    x = 77,313.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.